Mac 里我最喜欢的功能 - Emacs 快捷键

刚接触 Mac 时，最喜欢的就是 Mac 所有输入框都有类似 Emacs 的快捷键（因为有过 vim 和 Emacs 经验），日常也经常使用这些快捷键。 一直不知道原来这些快捷键还可以自定义，今天因为 iTerm2 里无法使用 Option + . 快捷键的问题，搜索到一个回答提到了怎么自定义这些快捷键。

Customize the behavior of Cocoa ’ s text system

苹果关于 Cocoa 的文档

下面是我的配置（在 MWeb 和 TextMate 里测试通过）：

• 更多 emacs 里移动和删除单词的
• 选中单词的
• Vscode 里很喜欢的上下移动行及往上下复制行的快捷键（使用了 vim 里的上下 j, k ）

// 在 ~/Library/KeyBindings/ 目录下添加 DefaultKeyBinding.dict 文件，这个目录默认不存在，先创建
// targetDir=~/Library/KeyBindings; [ -d $targetDir ] || mkdir $targetDir; ln -sf ~/Dropbox/conf/DefaultKeyBinding.dict $targetDir
// 此文件更改后，完全退出某个 app，重新打开即可使用
{
    /* Additional Emacs bindings */
    "~f" = "moveWordForward:";
    "~b" = "moveWordBackward:";
    "~d" = "deleteWordForward:";
    "~h" = "deleteWordBackward:";
    "~<" = "moveToBeginningOfDocument:";
    "~>" = "moveToEndOfDocument:";
    "~v" = "pageUp:"; /* ^v pageDown */
    // selections
    "~F" = "moveWordForwardAndModifySelection:";
    "~B" = "moveWordBackwardAndModifySelection:";
    "^," = "moveToBeginningOfDocumentAndModifySelection:"; /* select to beginning */
    "^." = "moveToEndOfDocumentAndModifySelection:"; /* select to ending */
    "~l" = "selectLine:";
    // compounds
    // "~t" = "moveToBeginningOfLine:"; // this two line is for debugging
    // "~y" = "deleteToEndOfLine:";
    "^K" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "deleteForward:");
    "~j" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "deleteForward:", "moveDown:", "yank:", "insertNewlineIgnoringFieldEditor:", "moveBackward:");
    "~k" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "deleteBackward:", "moveUp:", "moveToEndOfLine:", "insertNewlineIgnoringFieldEditor:", "yank:");
    "~J" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "yank:", "insertNewlineIgnoringFieldEditor:", "yank:");
    "~K" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "yank:", "insertNewlineIgnoringFieldEditor:", "yank:", "moveUp:");
    // "~K" = ("moveToBeginningOfLine:", "deleteToEndOfLine:", "yank:", "moveToBeginningOfLine:", "yank:", "insertNewlineIgnoringFieldEditor:", "moveBackward:");
}

Cocoa 默认快捷键定义在（可以看看哪些不知道的）： /System/Library/Frameworks/AppKit.framework/Resources/StandardKeyBinding.dict

iTerm2 里无法使用 Option + . 问题

Preferences - Profiles - Keys 将下面的 Left ⌥ Key 改为 Esc+ 就可以了

参考

Cocoa 常用命令

原文地址： https://uedsky.com/2019-08/mac-custom-cocoa-text-system/